A typical cell phone charger is rated to transfer a maximum of 1.0 Coulomb of charge per second. Calculate the maximum number of electrons that can be transferred by this charger in 1.0 hour.
1 C in 1 second, in 1 hour there is 60*60=3600 s, as a result in one hour there is 3600 coulombs of charge. Charge of electron= -(1.6*10^-19) Number of electrons= 3600/1.6*10^-19=2.25*10^22 electrons
